Thank you for posting your question. We know how important it is to get security updates and we’ll be happy to help!
The newest build number is AAE599 and was released May the 10th.
Please keep in mind you’ll need to have AT&T service and be in the AT&T network area to receive the update.
If this is the case and you’re still not able to install the update even after the factory reset, pleaseprivate messageme and provide your name, the error you’re receiving when attempting an update and a good contact number.
We look forward to hearing from you!
-JP, AT&T Social Media Manager
AT&T Customer Care
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